<?php
/**
 * UTF8 helper functions
 *
 * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
 * @author     Andreas Gohr <andi@splitbrain.org>
 */

/**
 * URL-Encode a filename to allow unicodecharacters
 *
 * Slashes are not encoded
 *
 * When the second parameter is true the string will
 * be encoded only if non ASCII characters are detected -
 * This makes it safe to run it multiple times on the
 * same string (default is true)
 *
 * @author Andreas Gohr <andi@splitbrain.org>
 * @see    urlencode
 */
function utf8_encodeFN($file,$safe=true){
  if($safe && preg_match('#^[a-zA-Z0-9/_\-.%]+$#',$file)){
    return $file;
  }
  $file = urlencode($file);
  $file = str_replace('%2F','/',$file);
  return $file;
}

/**
 * URL-Decode a filename
 *
 * This is just a wrapper around urldecode
 *
 * @author Andreas Gohr <andi@splitbrain.org>
 * @see    urldecode
 */
function utf8_decodeFN($file){
  $file = urldecode($file);
  return $file;
}

/**
 * Checks if a string contains 7bit ASCII only
 *
 * @author Andreas Gohr <andi@splitbrain.org>
 */
function utf8_isASCII($str){
  for($i=0; $i<strlen($str); $i++){
    if(ord($str{$i}) >127) return false;
  }
  return true;
}

/**
 * Tries to detect if a string is in Unicode encoding
 *
 * @author <bmorel@ssi.fr>
 * @link   http://www.php.net/manual/en/function.utf8-encode.php
 */
function utf8_check($Str) {
 for ($i=0; $i<strlen($Str); $i++) {
  if (ord($Str[$i]) < 0x80) continue; # 0bbbbbbb
  elseif ((ord($Str[$i]) & 0xE0) == 0xC0) $n=1; # 110bbbbb
  elseif ((ord($Str[$i]) & 0xF0) == 0xE0) $n=2; # 1110bbbb
  elseif ((ord($Str[$i]) & 0xF8) == 0xF0) $n=3; # 11110bbb
  elseif ((ord($Str[$i]) & 0xFC) == 0xF8) $n=4; # 111110bb
  elseif ((ord($Str[$i]) & 0xFE) == 0xFC) $n=5; # 1111110b
  else return false; # Does not match any model
  for ($j=0; $j<$n; $j++) { # n bytes matching 10bbbbbb follow ?
   if ((++$i == strlen($Str)) || ((ord($Str[$i]) & 0xC0) != 0x80))
   return false;
  }
 }
 return true;
}

/**
 * This is a unicode aware replacement for strlen()
 *
 * Uses mb_string extension if available
 *
 * @author Andreas Gohr <andi@splitbrain.org>
 * @see    strlen()
 */
function utf8_strlen($string){
  if(!defined('UTF8_NOMBSTRING') && function_exists('mb_strlen'))
    return mb_strlen($string,'utf-8');

  $uni = utf8_to_unicode($string);
  return count($uni);
}

/**
 * This is a unicode aware replacement for substr()
 *
 * Uses mb_string extension if available
 *
 * @author Andreas Gohr <andi@splitbrain.org>
 * @see    substr()
 */
function utf8_substr($str, $start, $length=null){
  if(!defined('UTF8_NOMBSTRING') && function_exists('mb_substr'))
    return mb_substr($str,$start,$length,'utf-8');

  $uni = utf8_to_unicode($str);
  return unicode_to_utf8(array_slice($uni,$start,$length));
}

/**
 * This is a unicode aware replacement for strtolower()
 *
 * Uses mb_string extension if available
 *
 * @author Andreas Gohr <andi@splitbrain.org>
 * @see    strtolower()
 * @see    utf8_strtoupper()
 */
function utf8_strtolower($string){
  if(!defined('UTF8_NOMBSTRING') && function_exists('mb_strtolower'))
    return mb_strtolower($string,'utf-8');

  global $UTF8_UPPER_TO_LOWER;
  $uni = utf8_to_unicode($string); 
  for ($i=0; $i < count($uni); $i++){
    if($UTF8_UPPER_TO_LOWER[$uni[$i]]){
      $uni[$i] = $UTF8_UPPER_TO_LOWER[$uni[$i]];
    }
  }
  return unicode_to_utf8($uni);
}

/**
 * This is a unicode aware replacement for strtoupper()
 *
 * Uses mb_string extension if available
 *
 * @author Andreas Gohr <andi@splitbrain.org>
 * @see    strtoupper()
 * @see    utf8_strtoupper()
 */
function utf8_strtoupper($string){
  if(!defined('UTF8_NOMBSTRING') && function_exists('mb_strtolower'))
    return mb_strtolower($string,'utf-8');

  global $UTF8_LOWER_TO_UPPER;
  $uni = utf8_to_unicode($string);
  for ($i=0; $i < count($uni); $i++){
    if($UTF8_LOWER_TO_UPPER[$uni[$i]]){
      $uni[$i] = $UTF8_LOWER_TO_UPPER[$uni[$i]];
    }
  }
  return unicode_to_utf8($uni);
}

/**
 * Replace accented UTF-8 characters by unaccented ASCII-7 equivalents
 *
 * Use the optional parameter to just deaccent lower ($case = -1) or upper ($case = 1)
 * letters. Default is to deaccent both cases ($case = 0)
 *
 * @author Andreas Gohr <andi@splitbrain.org>
 */
function utf8_deaccent($string,$case=0){
  if($case <= 0){
    global $UTF8_LOWER_ACCENTS;
    $string = str_replace(array_keys($UTF8_LOWER_ACCENTS),array_values($UTF8_LOWER_ACCENTS),$string);
  }
  if($case >= 0){
    global $UTF8_UPPER_ACCENTS;
    $string = str_replace(array_keys($UTF8_UPPER_ACCENTS),array_values($UTF8_UPPER_ACCENTS),$string);
  }
  return $string;
}

/**
 * Removes special characters (nonalphanumeric) from a UTF-8 string
 *
 * Be sure to specify all specialchars you give in $repl in $keep, too
 * or it won't work.
 *
 * This function adds the controlchars 0x00 to 0x19 to the array of
 * stripped chars (they are not included in $UTF8_SPECIAL_CHARS)
 *
 * @author Andreas Gohr <andi@splitbrain.org>
 * @param  string $string The UTF8 string to strip of special chars
 * @param  string $repl   Replace special with this string
 * @param  string $keep   Special chars to keep (in UTF8)
 */
function utf8_stripspecials($string,$repl='',$keep=''){
  global $UTF8_SPECIAL_CHARS;
  if($keep != ''){
    $specials = array_diff($UTF8_SPECIAL_CHARS, utf8_to_unicode($keep));
  }else{
    $specials = $UTF8_SPECIAL_CHARS;
  }

  $specials = unicode_to_utf8($specials);
  $specials = preg_quote($specials, '/');
  
  return preg_replace('/[\x00-\x19'.$specials.']/u',$repl,$string);
}

/**
 * This is an Unicode aware replacement for strpos
 *
 * Uses mb_string extension if available
 *
 * @author Scott Michael Reynen <scott@randomchaos.com>
 * @author Andreas Gohr <andi@splitbrain.org>
 * @link   http://www.randomchaos.com/document.php?source=php_and_unicode
 * @see    strpos()
 */
function utf8_strpos($haystack, $needle,$offset=0) {
  if(!defined('UTF8_NOMBSTRING') && function_exists('mb_strpos'))
    return mb_strpos($haystack,$needle,$offset,'utf-8');

  $haystack = utf8_to_unicode($haystack);
  $needle   = utf8_to_unicode($needle);
  $position = $offset;
  $found = false;
  
  while( (! $found ) && ( $position < count( $haystack ) ) ) {
    if ( $needle[0] == $haystack[$position] ) {
      for ($i = 1; $i < count( $needle ); $i++ ) {
        if ( $needle[$i] != $haystack[ $position + $i ] ) break;
      }
      if ( $i == count( $needle ) ) {
        $found = true;
        $position--;
      }
    }
    $position++;
  }
  return ( $found == true ) ? $position : false;
}

/**
 * This function will any UTF-8 encoded text and return it as
 * a list of Unicode values:
 *
 * @author Scott Michael Reynen <scott@randomchaos.com>
 * @link   http://www.randomchaos.com/document.php?source=php_and_unicode
 * @see    unicode_to_utf8()
 */
function utf8_to_unicode( $str ) {
  $unicode = array();  
  $values = array();
  $lookingFor = 1;
  
  for ($i = 0; $i < strlen( $str ); $i++ ) {
    $thisValue = ord( $str[ $i ] );
    if ( $thisValue < 128 ) $unicode[] = $thisValue;
    else {
      if ( count( $values ) == 0 ) $lookingFor = ( $thisValue < 224 ) ? 2 : 3;
      $values[] = $thisValue;
      if ( count( $values ) == $lookingFor ) {
  $number = ( $lookingFor == 3 ) ?
    ( ( $values[0] % 16 ) * 4096 ) + ( ( $values[1] % 64 ) * 64 ) + ( $values[2] % 64 ):
  	( ( $values[0] % 32 ) * 64 ) + ( $values[1] % 64 );
  $unicode[] = $number;
  $values = array();
  $lookingFor = 1;
      }
    }
  }
  return $unicode;
}

/**
 * This function will convert a Unicode array back to its UTF-8 representation
 *
 * @author Scott Michael Reynen <scott@randomchaos.com>
 * @link   http://www.randomchaos.com/document.php?source=php_and_unicode
 * @see    utf8_to_unicode()
 */
function unicode_to_utf8( $str ) {
  $utf8 = '';
  foreach( $str as $unicode ) {
    if ( $unicode < 128 ) {
      $utf8.= chr( $unicode );
    } elseif ( $unicode < 2048 ) {
      $utf8.= chr( 192 +  ( ( $unicode - ( $unicode % 64 ) ) / 64 ) );
      $utf8.= chr( 128 + ( $unicode % 64 ) );
    } else {
      $utf8.= chr( 224 + ( ( $unicode - ( $unicode % 4096 ) ) / 4096 ) );
      $utf8.= chr( 128 + ( ( ( $unicode % 4096 ) - ( $unicode % 64 ) ) / 64 ) );
      $utf8.= chr( 128 + ( $unicode % 64 ) );
    }
  }
  return $utf8;
}

/**
 * UTF-8 Case lookup table
 *
 * This lookuptable defines the upper case letters to their correspponding
 * lower case letter in UTF-8
 *
 * @author Andreas Gohr <andi@splitbrain.org>
 */
$UTF8_LOWER_TO_UPPER = array(
  0x0061=>0x0041, 0x03C6=>0x03A6, 0x0163=>0x0162, 0x00E5=>0x00C5, 0x0062=>0x0042,
  0x013A=>0x0139, 0x00E1=>0x00C1, 0x0142=>0x0141, 0x03CD=>0x038E, 0x0101=>0x0100,
  0x0491=>0x0490, 0x03B4=>0x0394, 0x015B=>0x015A, 0x0064=>0x0044, 0x03B3=>0x0393,
  0x00F4=>0x00D4, 0x044A=>0x042A, 0x0439=>0x0419, 0x0113=>0x0112, 0x043C=>0x041C,
  0x015F=>0x015E, 0x0144=>0x0143, 0x00EE=>0x00CE, 0x045E=>0x040E, 0x044F=>0x042F,
  0x03BA=>0x039A, 0x0155=>0x0154, 0x0069=>0x0049, 0x0073=>0x0053, 0x1E1F=>0x1E1E,
  0x0135=>0x0134, 0x0447=>0x0427, 0x03C0=>0x03A0, 0x0438=>0x0418, 0x00F3=>0x00D3,
  0x0440=>0x0420, 0x0454=>0x0404, 0x0435=>0x0415, 0x0449=>0x0429, 0x014B=>0x014A,
  0x0431=>0x0411, 0x0459=>0x0409, 0x1E03=>0x1E02, 0x00F6=>0x00D6, 0x00F9=>0x00D9,
  0x006E=>0x004E, 0x0451=>0x0401, 0x03C4=>0x03A4, 0x0443=>0x0423, 0x015D=>0x015C,
  0x0453=>0x0403, 0x03C8=>0x03A8, 0x0159=>0x0158, 0x0067=>0x0047, 0x00E4=>0x00C4,
  0x03AC=>0x0386, 0x03AE=>0x0389, 0x0167=>0x0166, 0x03BE=>0x039E, 0x0165=>0x0164,
  0x0117=>0x0116, 0x0109=>0x0108, 0x0076=>0x0056, 0x00FE=>0x00DE, 0x0157=>0x0156,
  0x00FA=>0x00DA, 0x1E61=>0x1E60, 0x1E83=>0x1E82, 0x00E2=>0x00C2, 0x0119=>0x0118,
  0x0146=>0x0145, 0x0070=>0x0050, 0x0151=>0x0150, 0x044E=>0x042E, 0x0129=>0x0128,
  0x03C7=>0x03A7, 0x013E=>0x013D, 0x0442=>0x0422, 0x007A=>0x005A, 0x0448=>0x0428,
  0x03C1=>0x03A1, 0x1E81=>0x1E80, 0x016D=>0x016C, 0x00F5=>0x00D5, 0x0075=>0x0055,
  0x0177=>0x0176, 0x00FC=>0x00DC, 0x1E57=>0x1E56, 0x03C3=>0x03A3, 0x043A=>0x041A,
  0x006D=>0x004D, 0x016B=>0x016A, 0x0171=>0x0170, 0x0444=>0x0424, 0x00EC=>0x00CC,
  0x0169=>0x0168, 0x03BF=>0x039F, 0x006B=>0x004B, 0x00F2=>0x00D2, 0x00E0=>0x00C0,
  0x0434=>0x0414, 0x03C9=>0x03A9, 0x1E6B=>0x1E6A, 0x00E3=>0x00C3, 0x044D=>0x042D,
  0x0436=>0x0416, 0x01A1=>0x01A0, 0x010D=>0x010C, 0x011D=>0x011C, 0x00F0=>0x00D0,
  0x013C=>0x013B, 0x045F=>0x040F, 0x045A=>0x040A, 0x00E8=>0x00C8, 0x03C5=>0x03A5,
  0x0066=>0x0046, 0x00FD=>0x00DD, 0x0063=>0x0043, 0x021B=>0x021A, 0x00EA=>0x00CA,
  0x03B9=>0x0399, 0x017A=>0x0179, 0x00EF=>0x00CF, 0x01B0=>0x01AF, 0x0065=>0x0045,
  0x03BB=>0x039B, 0x03B8=>0x0398, 0x03BC=>0x039C, 0x045C=>0x040C, 0x043F=>0x041F,
  0x044C=>0x042C, 0x00FE=>0x00DE, 0x00F0=>0x00D0, 0x1EF3=>0x1EF2, 0x0068=>0x0048,
  0x00EB=>0x00CB, 0x0111=>0x0110, 0x0433=>0x0413, 0x012F=>0x012E, 0x00E6=>0x00C6,
  0x0078=>0x0058, 0x0161=>0x0160, 0x016F=>0x016E, 0x03B1=>0x0391, 0x0457=>0x0407,
  0x0173=>0x0172, 0x00FF=>0x0178, 0x006F=>0x004F, 0x043B=>0x041B, 0x03B5=>0x0395,
  0x0445=>0x0425, 0x0121=>0x0120, 0x017E=>0x017D, 0x017C=>0x017B, 0x03B6=>0x0396,
  0x03B2=>0x0392, 0x03AD=>0x0388, 0x1E85=>0x1E84, 0x0175=>0x0174, 0x0071=>0x0051,
  0x0437=>0x0417, 0x1E0B=>0x1E0A, 0x0148=>0x0147, 0x0105=>0x0104, 0x0458=>0x0408,
  0x014D=>0x014C, 0x00ED=>0x00CD, 0x0079=>0x0059, 0x010B=>0x010A, 0x03CE=>0x038F,
  0x0072=>0x0052, 0x0430=>0x0410, 0x0455=>0x0405, 0x0452=>0x0402, 0x0127=>0x0126,
  0x0137=>0x0136, 0x012B=>0x012A, 0x03AF=>0x038A, 0x044B=>0x042B, 0x006C=>0x004C,
  0x03B7=>0x0397, 0x0125=>0x0124, 0x0219=>0x0218, 0x00FB=>0x00DB, 0x011F=>0x011E,
  0x043E=>0x041E, 0x1E41=>0x1E40, 0x03BD=>0x039D, 0x0107=>0x0106, 0x03CB=>0x03AB,
  0x0446=>0x0426, 0x00FE=>0x00DE, 0x00E7=>0x00C7, 0x03CA=>0x03AA, 0x0441=>0x0421,
  0x0432=>0x0412, 0x010F=>0x010E, 0x00F8=>0x00D8, 0x0077=>0x0057, 0x011B=>0x011A,
  0x0074=>0x0054, 0x006A=>0x004A, 0x045B=>0x040B, 0x0456=>0x0406, 0x0103=>0x0102,
  0x03BB=>0x039B, 0x00F1=>0x00D1, 0x043D=>0x041D, 0x03CC=>0x038C, 0x00E9=>0x00C9,
  0x00F0=>0x00D0, 0x0457=>0x0407, 0x0123=>0x0122,
); 

/**
 * UTF-8 Case lookup table
 *
 * This lookuptable defines the lower case letters to their correspponding
 * upper case letter in UTF-8 (it does so by flipping $UTF8_LOWER_TO_UPPER)
 *
 * @author Andreas Gohr <andi@splitbrain.org>
 */
$UTF8_UPPER_TO_LOWER = @array_flip($UTF8_LOWER_TO_UPPER);

/**
 * UTF-8 lookup table for lower case accented letters
 *
 * This lookuptable defines replacements for accented characters from the ASCII-7
 * range. This are lower case letters only.
 *
 * @author Andreas Gohr <andi@splitbrain.org>
 * @see    utf8_deaccent()
 */
$UTF8_LOWER_ACCENTS = array(
  '√ ' => 'a', '√¥' => 'o', 'ƒè' => 'd', '·∏ü' => 'f', '√´' => 'e', '≈°' => 's', '∆°' => 'o', 
  '√ü' => 'ss', 'ƒÉ' => 'a', '≈ô' => 'r', '»õ' => 't', '≈à' => 'n', 'ƒÅ' => 'a', 'ƒ∑' => 'k', 
  '≈ù' => 's', '·ª≥' => 'y', '≈Ü' => 'n', 'ƒ∫' => 'l', 'ƒß' => 'h', '·πó' => 'p', '√≥' => 'o', 
  '√∫' => 'u', 'ƒõ' => 'e', '√©' => 'e', '√ß' => 'c', '·∫Å' => 'w', 'ƒã' => 'c', '√µ' => 'o', 
  '·π°' => 's', '√∏' => 'o', 'ƒ£' => 'g', '≈ß' => 't', '»ô' => 's', 'ƒó' => 'e', 'ƒâ' => 'c', 
  '≈õ' => 's', '√Æ' => 'i', '≈±' => 'u', 'ƒá' => 'c', 'ƒô' => 'e', '≈µ' => 'w', '·π´' => 't', 
  '≈´' => 'u', 'ƒç' => 'c', '√∂' => 'oe', '√®' => 'e', '≈∑' => 'y', 'ƒÖ' => 'a', '≈Ç' => 'l', 
  '≈≥' => 'u', '≈Ø' => 'u', '≈ü' => 's', 'ƒü' => 'g', 'ƒº' => 'l', '∆í' => 'f', '≈æ' => 'z', 
  '·∫É' => 'w', '·∏É' => 'b', '√•' => 'a', '√¨' => 'i', '√Ø' => 'i', '·∏ã' => 'd', '≈•' => 't', 
  '≈ó' => 'r', '√§' => 'ae', '√≠' => 'i', '≈ï' => 'r', '√™' => 'e', '√º' => 'ue', '√≤' => 'o', 
  'ƒì' => 'e', '√±' => 'n', '≈Ñ' => 'n', 'ƒ•' => 'h', 'ƒù' => 'g', 'ƒë' => 'd', 'ƒµ' => 'j', 
  '√ø' => 'y', '≈©' => 'u', '≈≠' => 'u', '∆∞' => 'u', '≈£' => 't', '√Ω' => 'y', '≈ë' => 'o', 
  '√¢' => 'a', 'ƒæ' => 'l', '·∫Ö' => 'w', '≈º' => 'z', 'ƒ´' => 'i', '√£' => 'a', 'ƒ°' => 'g', 
  '·πÅ' => 'm', '≈ç' => 'o', 'ƒ©' => 'i', '√π' => 'u', 'ƒØ' => 'i', '≈∫' => 'z', '√°' => 'a', 
  '√ª' => 'u', '√æ' => 'th', '√∞' => 'dh', '√¶' => 'ae', '¬µ' => 'u',
);

/**
 * UTF-8 lookup table for upper case accented letters
 *
 * This lookuptable defines replacements for accented characters from the ASCII-7
 * range. This are upper case letters only.
 *
 * @author Andreas Gohr <andi@splitbrain.org>
 * @see    utf8_deaccent()
 */
$UTF8_UPPER_ACCENTS = array(
  '√ ' => 'A', '√¥' => 'O', 'ƒè' => 'D', '·∏ü' => 'F', '√´' => 'E', '≈°' => 'S', '∆°' => 'O', 
  '√ü' => 'Ss', 'ƒÉ' => 'A', '≈ô' => 'R', '»õ' => 'T', '≈à' => 'N', 'ƒÅ' => 'A', 'ƒ∑' => 'K', 
  '≈ù' => 'S', '·ª≥' => 'Y', '≈Ü' => 'N', 'ƒ∫' => 'L', 'ƒß' => 'H', '·πó' => 'P', '√≥' => 'O', 
  '√∫' => 'U', 'ƒõ' => 'E', '√©' => 'E', '√ß' => 'C', '·∫Å' => 'W', 'ƒã' => 'C', '√µ' => 'O', 
  '·π°' => 'S', '√∏' => 'O', 'ƒ£' => 'G', '≈ß' => 'T', '»ô' => 'S', 'ƒó' => 'E', 'ƒâ' => 'C', 
  '≈õ' => 'S', '√Æ' => 'I', '≈±' => 'U', 'ƒá' => 'C', 'ƒô' => 'E', '≈µ' => 'W', '·π´' => 'T', 
  '≈´' => 'U', 'ƒç' => 'C', '√∂' => 'Oe', '√®' => 'E', '≈∑' => 'Y', 'ƒÖ' => 'A', '≈Ç' => 'L', 
  '≈≥' => 'U', '≈Ø' => 'U', '≈ü' => 'S', 'ƒü' => 'G', 'ƒº' => 'L', '∆í' => 'F', '≈æ' => 'Z', 
  '·∫É' => 'W', '·∏É' => 'B', '√•' => 'A', '√¨' => 'I', '√Ø' => 'I', '·∏ã' => 'D', '≈•' => 'T', 
  '≈ó' => 'R', '√§' => 'Ae', '√≠' => 'I', '≈ï' => 'R', '√™' => 'E', '√º' => 'Ue', '√≤' => 'O', 
  'ƒì' => 'E', '√±' => 'N', '≈Ñ' => 'N', 'ƒ•' => 'H', 'ƒù' => 'G', 'ƒë' => 'D', 'ƒµ' => 'J', 
  '√ø' => 'Y', '≈©' => 'U', '≈≠' => 'U', '∆∞' => 'U', '≈£' => 'T', '√Ω' => 'Y', '≈ë' => 'O', 
  '√¢' => 'A', 'ƒæ' => 'L', '·∫Ö' => 'W', '≈º' => 'Z', 'ƒ´' => 'I', '√£' => 'A', 'ƒ°' => 'G', 
  '·πÅ' => 'M', '≈ç' => 'O', 'ƒ©' => 'I', '√π' => 'U', 'ƒØ' => 'I', '≈∫' => 'Z', '√°' => 'A', 
  '√ª' => 'U', '√û' => 'Th', '√ê' => 'Dh', '√Ü' => 'Ae',
);

/**
 * UTF-8 array of common special characters
 *
 * This array should contain all special characters (not a letter or digit)
 * defined in the various local charsets - it's not a complete list of non-alphanum
 * characters in UTF-8. It's not perfect but should match most cases of special
 * chars.
 *
 * The controlchars 0x00 to 0x19 are _not_ included in this array. The space 0x20 is!
 *
 * @author Andreas Gohr <andi@splitbrain.org>
 * @see    utf8_stripspecials()
 */
$UTF8_SPECIAL_CHARS = array(
  0x001a, 0x001b, 0x001c, 0x001d, 0x001e, 0x001f, 0x0020, 0x0021, 0x0022, 0x0023,
  0x0024, 0x0025, 0x0026, 0x0027, 0x0028, 0x0029, 0x002a, 0x002b, 0x002c, 0x002d,
  0x002e, 0x002f, 0x003a, 0x003b, 0x003c, 0x003d, 0x003e, 0x003f, 0x0040, 0x005b,
  0x005c, 0x005d, 0x005e, 0x005f, 0x0060, 0x0142, 0x007b, 0x007c, 0x007d, 0x007e,
  0x007f, 0x0080, 0x0081, 0x0082, 0x0083, 0x0084, 0x0085, 0x0086, 0x0087, 0x0088,
  0x0089, 0x008a, 0x008b, 0x008c, 0x008d, 0x008e, 0x008f, 0x0090, 0x0091, 0x0092,
	0x0093, 0x0094, 0x0095, 0x0096, 0x0097, 0x0098, 0x0099, 0x009a, 0x009b, 0x009c,
	0x009d, 0x009e, 0x009f, 0x00a0, 0x00a1, 0x00a2, 0x00a3, 0x00a4, 0x00a5, 0x00a6,
	0x00a7, 0x00a8, 0x00a9, 0x00aa, 0x00ab, 0x00ac, 0x00ad, 0x00ae, 0x00af, 0x00b0,
	0x00b1, 0x00b2, 0x00b3, 0x00b4, 0x00b5, 0x00b6, 0x00b7, 0x00b8, 0x00b9, 0x00ba,
	0x00bb, 0x00bc, 0x00bd, 0x00be, 0x00bf, 0x00d7, 0x00f7, 0x02c7, 0x02d8, 0x02d9,
	0x02da, 0x02db, 0x02dc, 0x02dd, 0x0300, 0x0301, 0x0303, 0x0309, 0x0323, 0x0384,
	0x0385, 0x0387, 0x03b2, 0x03c6, 0x03d1, 0x03d2, 0x03d5, 0x03d6, 0x05b0, 0x05b1,
	0x05b2, 0x05b3, 0x05b4, 0x05b5, 0x05b6, 0x05b7, 0x05b8, 0x05b9, 0x05bb, 0x05bc,
	0x05bd, 0x05be, 0x05bf, 0x05c0, 0x05c1, 0x05c2, 0x05c3, 0x05f3, 0x05f4, 0x060c,
	0x061b, 0x061f, 0x0640, 0x064b, 0x064c, 0x064d, 0x064e, 0x064f, 0x0650, 0x0651,
	0x0652, 0x066a, 0x0e3f, 0x200c, 0x200d, 0x200e, 0x200f, 0x2013, 0x2014, 0x2015,
	0x2017, 0x2018, 0x2019, 0x201a, 0x201c, 0x201d, 0x201e, 0x2020, 0x2021, 0x2022,
	0x2026, 0x2030, 0x2032, 0x2033, 0x2039, 0x203a, 0x2044, 0x20a7, 0x20aa, 0x20ab,
	0x20ac, 0x2116, 0x2118, 0x2122, 0x2126, 0x2135, 0x2190, 0x2191, 0x2192, 0x2193,
	0x2194, 0x2195, 0x21b5, 0x21d0, 0x21d1, 0x21d2, 0x21d3, 0x21d4, 0x2200, 0x2202,
	0x2203, 0x2205, 0x2206, 0x2207, 0x2208, 0x2209, 0x220b, 0x220f, 0x2211, 0x2212,
	0x2215, 0x2217, 0x2219, 0x221a, 0x221d, 0x221e, 0x2220, 0x2227, 0x2228, 0x2229,
	0x222a, 0x222b, 0x2234, 0x223c, 0x2245, 0x2248, 0x2260, 0x2261, 0x2264, 0x2265,
	0x2282, 0x2283, 0x2284, 0x2286, 0x2287, 0x2295, 0x2297, 0x22a5, 0x22c5, 0x2310,
	0x2320, 0x2321, 0x2329, 0x232a, 0x2469, 0x2500, 0x2502, 0x250c, 0x2510, 0x2514,
	0x2518, 0x251c, 0x2524, 0x252c, 0x2534, 0x253c, 0x2550, 0x2551, 0x2552, 0x2553,
	0x2554, 0x2555, 0x2556, 0x2557, 0x2558, 0x2559, 0x255a, 0x255b, 0x255c, 0x255d,
	0x255e, 0x255f, 0x2560, 0x2561, 0x2562, 0x2563, 0x2564, 0x2565, 0x2566, 0x2567,
	0x2568, 0x2569, 0x256a, 0x256b, 0x256c, 0x2580, 0x2584, 0x2588, 0x258c, 0x2590,
	0x2591, 0x2592, 0x2593, 0x25a0, 0x25b2, 0x25bc, 0x25c6, 0x25ca, 0x25cf, 0x25d7,
	0x2605, 0x260e, 0x261b, 0x261e, 0x2660, 0x2663, 0x2665, 0x2666, 0x2701, 0x2702,
	0x2703, 0x2704, 0x2706, 0x2707, 0x2708, 0x2709, 0x270c, 0x270d, 0x270e, 0x270f,
	0x2710, 0x2711, 0x2712, 0x2713, 0x2714, 0x2715, 0x2716, 0x2717, 0x2718, 0x2719,
	0x271a, 0x271b, 0x271c, 0x271d, 0x271e, 0x271f, 0x2720, 0x2721, 0x2722, 0x2723,
	0x2724, 0x2725, 0x2726, 0x2727, 0x2729, 0x272a, 0x272b, 0x272c, 0x272d, 0x272e,
	0x272f, 0x2730, 0x2731, 0x2732, 0x2733, 0x2734, 0x2735, 0x2736, 0x2737, 0x2738,
	0x2739, 0x273a, 0x273b, 0x273c, 0x273d, 0x273e, 0x273f, 0x2740, 0x2741, 0x2742,
	0x2743, 0x2744, 0x2745, 0x2746, 0x2747, 0x2748, 0x2749, 0x274a, 0x274b, 0x274d,
	0x274f, 0x2750, 0x2751, 0x2752, 0x2756, 0x2758, 0x2759, 0x275a, 0x275b, 0x275c,
	0x275d, 0x275e, 0x2761, 0x2762, 0x2763, 0x2764, 0x2765, 0x2766, 0x2767, 0x277f,
	0x2789, 0x2793, 0x2794, 0x2798, 0x2799, 0x279a, 0x279b, 0x279c, 0x279d, 0x279e,
	0x279f, 0x27a0, 0x27a1, 0x27a2, 0x27a3, 0x27a4, 0x27a5, 0x27a6, 0x27a7, 0x27a8,
	0x27a9, 0x27aa, 0x27ab, 0x27ac, 0x27ad, 0x27ae, 0x27af, 0x27b1, 0x27b2, 0x27b3,
	0x27b4, 0x27b5, 0x27b6, 0x27b7, 0x27b8, 0x27b9, 0x27ba, 0x27bb, 0x27bc, 0x27bd,
	0x27be, 0xf6d9, 0xf6da, 0xf6db, 0xf8d7, 0xf8d8, 0xf8d9, 0xf8da, 0xf8db, 0xf8dc,
	0xf8dd, 0xf8de, 0xf8df, 0xf8e0, 0xf8e1, 0xf8e2, 0xf8e3, 0xf8e4, 0xf8e5, 0xf8e6,
	0xf8e7, 0xf8e8, 0xf8e9, 0xf8ea, 0xf8eb, 0xf8ec, 0xf8ed, 0xf8ee, 0xf8ef, 0xf8f0,
	0xf8f1, 0xf8f2, 0xf8f3, 0xf8f4, 0xf8f5, 0xf8f6, 0xf8f7, 0xf8f8, 0xf8f9, 0xf8fa,
	0xf8fb, 0xf8fc, 0xf8fd, 0xf8fe, 0xfe7c, 0xfe7d,
);
function remove_accents($string, $german=false) {
    // Single letters
    $single_fr = explode(" ", "À Á Â Ã Ä Å &#260; &#258; Ç &#262; &#268; &#270; &#272; Ð È É Ê Ë &#280; &#282; &#286; Ì Í Î Ï &#304; &#321; &#317; &#313; Ñ &#323; &#327; Ò Ó Ô Õ Ö Ø &#336; &#340; &#344; Š &#346; &#350; &#356; &#354; Ù Ú Û Ü &#366; &#368; Ý Ž &#377; &#379; à á â ã ä å &#261; &#259; ç &#263; &#269; &#271; &#273; è é ê ë &#281; &#283; &#287; ì í î ï &#305; &#322; &#318; &#314; ñ &#324; &#328; ð ò ó ô õ ö ø &#337; &#341; &#345; &#347; š &#351; &#357; &#355; ù ú û ü &#367; &#369; ý ÿ ž &#378; &#380;");
    $single_to = explode(" ", "A A A A A A A A C C C D D D E E E E E E G I I I I I L L L N N N O O O O O O O R R S S S T T U U U U U U Y Z Z Z a a a a a a a a c c c d d e e e e e e g i i i i i l l l n n n o o o o o o o o r r s s s t t u u u u u u y y z z z");
    $single = array();
    for ($i=0; $i<count($single_fr); $i++) {
        $single[$single_fr[$i]] = $single_to[$i];
    }
    // Ligatures
    $ligatures = array("Æ"=>"Ae", "æ"=>"ae", "Œ"=>"Oe", "œ"=>"oe", "ß"=>"ss");
    // German umlauts
    $umlauts = array("Ä"=>"Ae", "ä"=>"ae", "Ö"=>"Oe", "ö"=>"oe", "Ü"=>"Ue", "ü"=>"ue");
    // Replace
    $replacements = array_merge($single, $ligatures);
    if ($german) $replacements = array_merge($replacements, $umlauts);
    $string = strtr($string, $replacements);
    return $string;
}
?>
